Truck bolster



March 21, 1933. H. c. DRI-:muss ET AL 1,902,896

TRUCK BOLSTER Filed oct. 9, 1930 2 sheets-sheet 1 March 21, 1933. H. c. DRElBUss Er AL TRUCK BoLsTER 2 sheets-sheet 2 Filed O01.. 9, 1950 JI@ 0,29 @mm Patented Mar. 21, 41933 orari-1D;,STATES PATENT opncg HARRY C. DREIBUSS AND GEORGE S. CHILES, 0F ST.V LOUIS, MISSOURI, ASSIGNORS T0 SCULLIN STEEL GO., OF ST. ILOUIS, MISSOURI, yA CORPORATION OF DELAWARE Y 'mno-K BoLs'rER` Appucation md october 9, i930. Yserieu N, 487,488@

This invention relates to truck holsters of the box type, and is illustrated as ernbodied in abolster having central transverse I openings through' which a brake rod may ex- A tend.V In many of its aspects,however, the

invention is equally applicable to y'other types of holsters' and other parts thereof than that l shown.

The invention may include a customary center plate formed as a part of the upper wall. The side walls may Jhave suitable flanged openings therethrough and the flanges may preferably be extended to meet a Wall adjacent the Wall from which the flange extends for the'purpose of reinforcement. vIn the illustrated embodiment, the flanges form the inner support for the center plate. One object of this invention is toV provide a truck bolster which is sufliciently strong to withstand any'use to which it may be put and which may be cast more easily and more cheaply. Y t I ,A further obj ect of the invention is to provide fa vtruck bolster in which the centerplate is provided with suitable inner supports of the most efficient possible construction; Y Another object of the invention is to provide atruck bolster having transverse openings through which mayy be passed a brake I'odandl which is suitably reinforced in the most ellicient manner. f

' With Athese and various other objects in view, the invention may consist of certain novel features of construction and operation, as .will be more fully described and particularly pointed out in the specification, draw.

an 8m- Figure 4 is a Viewtaken along the line v4 4 of Figure 1; and j L A Figures 5 and 6 are fragmentary sectional views illustrating'on an enlargd scale alternative forms of flanges whic may be emvbodied inthe structure of lFigure 1` or in' other parts of truck holsters;

In all the embodiments "of the vinvention which we haveA chosen for illustration, the

bolsterV includes the side walls 10, the bottom` 12 and the top 14. In accordancewithtlie erably integrally cast, together with the `rest of thestructure to` be described. The top '14 includes the center plate 16 surrounded be constructed as showntherein, or accordf ing to the modifications taught bythis application. `Accordingtolthe present invention, the internal structure of the bolster has been considerably simplified. Eachof the side openings 22 isprovided ,with Aa vre-entrant flange 26, which is in theforni of a continuation of the metal through which the hole is formed. As these flanges join ther walls in which they are formed with continuous Vnon-intersecting lines of metal, dilliculties such `as* undesirable internal stresses are avoided;

In the constructions shown in Figuresl to 4 and 6, flanges 26 are flared outw ardly,las at 28. yThese outwardly laredportionsfextend preferably entirely aroundthe Aopening and greatly reinforce the same. However,

as shown in Figure 5 the flared portionmay be omitted along certain parts of the flanges. In all the forms ,it is'best to retaiii the upper and lower portions of the flaresas it'is de.- sirable that these extend vertically'upwardly as at 30 and vertically downwardly as at 32. 'The upward extensions 30 from the two adjacent flares preferablyfmeet each other Vvcustomary practice, thesemembers are pref'- Y A and in combination join and `support the ures 2, 3 and 4 both the upward and downward extensions are preferably formed to meet the centerplate and bottom respectively. atthe points where they will do the most s good. Thus each upper extension meets the center plate in a line that starts fairly close to the transverse center thereof, but

which recedes toward the outer side at "the llongitudinal center, this junction not only causes the center plate support tov conform vsomewhat to the contour of the center plate,

v but it also-results in having thevarious parts of the support lyingin planes at angles to onek another, thereby having a .maximum strength. Between the side openings 22, the

l .extensions 28 of the flanges are integrally ,joined thus forming a tube. This tubular formation of coursegreatly increases the strength of the flanges and therefore of` the lentire center structure.

If even greater strength is desired inthe bolster, thewalls Y10 may be slightly thickened around the side openings 22 as shown in Figures 5 and 6. This thickening may be .carried onV into the flange as illustrated. It

has yalso been found that thisthickening of the walls is desirable around'all their open- 1' ings which may be provided in the various Awalls of the bolsters. yVhen ,the thickened walls lfare combinedl with' the re-entrant viiangesr` an lexceedingly strong structure is' produced.

As. before mentioned,

may be left in the shortened forni shown in Figure 6. Of course even in that forni they are preferablyextended to provide the prop-v er reinforcing connections between the walls. From the drawings and inthe'light of the v foregoing description it maybe seen that the load on thecentral portion of the center plate Yis supported by extensions 30 which form columns and which transmit their load chiefly to the side walls 10 through the flared flanges V26. At the same time, the sidewalls are prevented from buckling and arel restrained from their breathing action bythe flanges around the openings and by the connecting web 34. As is perhaps most clearly'shown'by lFigu're 4, the construction provided is extremely simple. This results not only in a saving of metal, but also in simplified cores and casting operations, which results in greater economy in the manufacture of these truck bolsters withoutlos's of strength. ,Y Y It is to be'understood that we do not wish to be limited by the exact embodimentsy of the device shown which are merely by way of ilthe re-entrant Y ,flanges 26 need not necessarilybe'fiared, but

lustration and not limitation, as various and other forms of the device will of course be apparent to those skilled in the art without departing from the spirit of the invention or the scope of the claims.

We claim:

1. A box type of bolster having a wall with an opening therethrough, the porti-onk of said wall adjacent said opening being thicker than th-e remote portion of said wall and a ,reentrant flange surrounding said opening.

2. A box type of bolster having a wall with an opening therethrough, the portion of said wall adjacent said opening being thicker than the remotev porti-onof said wall and extended to form a flange surrounding saidopening, said flange being flared at its end.4 v

3. A boxlike truck bolster having a'wall and an opening therethrough, said wall being steeply-diverging flare at its end.

4. A boxlike'truck bolster having afwall and an opening therethrough, said wall being extended to form a fiangearoun-d said openking, said flange being flared completely J formed tangent to said wall.

6. Atruck'bolster including a wall having a ypair of openings therethrough, said openings having flanges and said flanges being vextended and integrally joined between sai-d` openings to'fornia tubular structure.' 1 'v extended to form a fiangearound said opeI1- 85 ing, said' flange being provided'with short,

ioo

7.' A truck bolster including a center plate, i

and side walls, 'said side walls eachghaving ya pair of openings therein and being extended to form flanges around said openings,

said flanges being curved upwardly. close to Ysai-d walls and being extended to joinl center plate to help support the same.

8. A truck bolster of the box type including a center plate, side walls and -innermembers for supporting the central portion/of said center plate, said inner members being in part parallel with theV side walls, and "intersecting said center plate in llines extending at acute angles fromjsaid walls.

9. A truck bolster ofthe box type includbers for supporting said center plate,said inner members intersecting-said center plate -in spaced'lines extending at (angles to'said side walls. n

" 10. A-truck bolsterof the box type'includ- 4ing a center plate, side walls and inner members for supporting said center plate, said inner members intersecting said center vplate in spaced lines extending at anglesto said ,side walls, said members extending from the intersection to the side walls and joining Vtherewith without intersection. i.

r ing a center plate, side walls and inner menisaid side walls each having a hole therethrough through which a brake rod may pass, a flange around said hole said flange being extended upwardly in close proximity to the connected wall and joining the center plate in a line at an angleto said wall.

l2. A truck bolster of the box type including a center plate, side Walls and a bottoni, said side walls each having a hole therethrough through which a brake rod may pass, a flange around said hole said flange being extended upwardly in close proximity to the connected Wall and joining the center plate in a line at an langle to said wall, said flanges on opposite WallsV connected by Va member integral therewith in the vertically central portion of said bolster.

13. A truck bolster of the box type including a center plate, side walls and a bottom, sai-d side walls each having a hole therethrough through which -a brake rod may pass, a flange around sai-d hole said flange being extended upwardly in close proximity to the connected Wall and joining the center plate in a line at an angle to said wall, said flange being extended downwardly to join the bottom member. Y

14. A box type'of bolster having a wall with an opening therethrough, the portion of said wall adjacent said opening being thicker than the remote portion of said w-all, the wall being gradually tap-ered from one thickness to the other, and a re-entrant flange surrounding said opening.

l5. A box type of bolster having a wall with an opening therethrough, and a reentrant flange surrounding s-aid opening; said wall and flange being thicker adjacent said opening than remote therefrom, and being gradually tapered from one thickness to the other.

Signed at St. Louis, Missouri, this 4th day of October, 1930.

HARRY C. DREIBUSS. GEORGE S. CHILES. 

